331012601 has 2 divisors, whose sum is σ = 331012602. Its totient is φ = 331012600.

The previous prime is 331012567. The next prime is 331012603. The reversal of 331012601 is 106210133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 322741225 + 8271376 = 17965^2 + 2876^2 .

It is a cyclic number.

It is not a de Polignac number, because 331012601 - 2¹⁴ = 330996217 is a prime.

Together with 331012603, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331012601.

It is not a weakly prime, because it can be changed into another prime (331012603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165506300 + 165506301.

It is an arithmetic number, because the mean of its divisors is an integer number (165506301).

Almost surely, 2^331012601 is an apocalyptic number.

It is an amenable number.

331012601 is a deficient number, since it is larger than the sum of its proper divisors (1).

331012601 is an equidigital number, since it uses as much as digits as its factorization.

331012601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 331012601 is about 18193.7517021641. The cubic root of 331012601 is about 691.7484196072.

Adding to 331012601 its reverse (106210133), we get a palindrome (437222734).

The spelling of 331012601 in words is "three hundred thirty-one million, twelve thousand, six hundred one".